Yesterday I posed this thought to our Twitter and Facebook users: The world can be divided into two types of people: Those who squeeze the toothpaste in the middle (or anywhere, randomly), and those who must squeeze from the bottom.

Then I asked for additional examples. Dozens poured in. Here are my Top 10 Favorites:

10. Heather Griffin said: one that calls any type of cola SODA, and the other that calls it POP.9. Kristen Leigh said: Those who hang the roll of toilet paper over, and those who hang under.8. Liz Kim said: those who pour the cereal in first and those that pour the milk in...!7. Ferris Weston said: 1) Those who do not understand dichotomies.6. Jane Daugherty Martin said: People who read the instructions and those who do not5. Kathryn Kamowski said: Those who like Journey, and those who lie.4. Rammy Meyerowitz said: There are two "types" of people, the "touch-typists" and the "hunt and peckers"3. Norbert Smith said: Those who think there are two types of people, and those who don't.2. Charlotte Holden said: those that understand Lost and those that appreciate all this free time on their handsAnd my number-1 favorite, which is an old math joke, but one I’d never heard before: Amy Dyer said: There are 10 types of people: Those who understand binary and those who don't